The toString()
method returns a string representing the specified array and its elements.
Syntax
arr.toString()
Return value
A string representing the elements of the array.
Description
The Array
object overrides the toString
method of Object
. For Array objects, the toString
method joins the array and returns one string containing each array element separated by commas.
JavaScript calls the toString
method automatically when an array is to be represented as a text value or when an array is referred to in a string concatenation.
ECMAScript 5 semantics
Starting in JavaScript 1.8.5 (Firefox 4), and consistent with ECMAScript 5th edition semantics, the toString()
method is generic and can be used with any object. Object.prototype.toString()
will be called, and the resulting value will be returned.
Examples
Using toString
const array1 = [1, 2, 'a', '1a']; console.log(array1.toString()); // expected output: "1,2,a,1a"
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Array.prototype.toString' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
toString | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 4 | Opera Full support 4 | Safari Full support 1 | WebView Android Full support ≤37 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |
Legend
- Full support
- Full support